poc

 PI:             Jan Newton
 of:             University of Washington
 dataset:        Particulate organic carbon and nitrogen, total particulate carbon
 project/cruise: US JGOFS, EQPAC/TT007
 ship:           R/V Thomas Thompson
 
 Methodology

 EqPac bottle quality review summary from DMO

 DMO cautionary note:
 The DMO suspects a misalignment of either bottle numbers or the
 corresponding depths/pressures for events 02031635, 02040845 and
 02150770.  A shift of either bottle number or depth up or down by one
 sampling interval will align the data correctly.  However, we at the DMO
 are not in the position to make these corrections.

 Event number 02101209 bottle numbers and corresponding depths are
 questionable, but the correct solution is not easily identified.  
 The entire cast is in question.

 These correlations are based on the event/bottle number/depths reported
 by Murray in his final bottle cast file.
 
 
  Parameter    Description                                 Units 

  event        event/operation number from event log
  sta          station number from event log
  cast         CTD cast number from event log
  bot          CTD rosette bottle number
  depth_n      nominal sample depth                        meters
  TPC          total particulate carbon, sample            micromoles/liter
                 non-acidified, units converted by the 
                 US JGOFS Data Management Office
  POC          particulate organic carbon, sample          micromoles/liter
                 acidified, units converted by the 
                 US JGOFS Data Management Office
  PON          particulate organic nitrogen, units         micromoles/liter
                 converted by the US JGOFS Data 
                 Management Office
  TPC_orig     total particulate carbon in units           micrograms/liter
                 originally received from PI
                 (sample non-acidified)
  POC_orig     particulate organic carbon in units         micrograms/liter
                 originally received from PI
                 (sample acidified)
  PON_orig     particulate organic nitrogen in units       micrograms/liter
                 originally received from PI
  C_to_N_orig  carbon nitrogen ratio as originally 
                 received from PI